Items tagged “orbit”
122 results found
Case
Retinoblastoma - leukocoria (photo)
Published
20 Apr 2010
47% complete
Photo
Article
Orbital lymphoma
Primary lymphoma of the orbit is one of the most common orbital tumors and accounts for as much as half of all orbital malignancies. It is a B-cell non-Hodgkin lymphoma, and in most cases arises from mucosa-associated lymphoid tissue (MALT).
Epidemiology
Orbital lymphomas account for only 2% o...
Case
Orbital metastasis from breast cancer
Published
22 Apr 2010
87% complete
CT
Case
Acinic cell carcinoma of the lacrimal gland
Published
22 Apr 2010
86% complete
CT
Article
Orbital cavernous venous malformation
Cavernous venous malformations of the orbit, also known as cavernous hemangiomas, are the most common vascular lesion of the orbit in adults.
It is important to note that according to newer nomenclature (ISSVA classification of vascular anomalies) these lesions are merely known as slow flow ven...
Article
Orbital vascular lesions
Orbital vascular lesions may be difficult to distinguish on imaging. However, the following conditions have been described:
arteriovenous malformation (AVM)
capillary hemangioma
cavernous hemangioma
orbital lymphangioma / lymphangiovenous malformation / venolymphatic malformation
orbital ve...
Article
Intraconal orbital compartment
The intraconal orbital compartment or intraconal space is the conical space within the orbit and musculofascial cone, the base of which is anterior and is formed by the posterior half of the globe. The sides are formed by the extraocular muscles and their surrounding fascia which pass posteriorl...
Article
Orbital metastasis
Orbital metastases are relatively uncommon, but some primary tumors do have a predilection to metastasize to the orbit.
This article concerns itself with extraocular metastases, rather than intraocular tumors or direct extension of tumors from neighboring regions. For a discussion of intraocula...
Case
Retinoblastoma
Published
21 May 2010
83% complete
CT
Case
Posterior vitreous detachment
Published
07 Jun 2010
41% complete
Case
Auto-enucleation
Published
17 Jul 2010
66% complete
CT
Case
Malignant nerve sheath tumor of the ophthalmic nerve
Published
19 Jul 2010
65% complete
MRI
Case
Optic nerve sheath meningioma
Published
24 Jul 2010
65% complete
MRI
Article
Ocular metastasis
Ocular metastases, also termed uveal metastases, account for over 80% of all ocular pathology, and need to be distinguished from extraocular metastasis, which are quite different groups of tumors.
This article will discuss metastatic lesions affecting the orbits. For other intracranial metastat...
Case
Dacryocystitis
Published
20 Oct 2010
33% complete
CT
Article
Lacrimal gland masses
Lacrimal gland masses can be classified into two broad groups - inflammatory (~50%) and neoplastic, either lymphoma (25%) or salivary gland type tumors (~25%).
Pathology
Inflammatory
sarcoidosis
affects ~25% of patients with systemic disease
orbital inflammatory pseudotumor
lacrimal glan...
Case
Blowout fracture with inferior rectus entrapment
Published
23 Nov 2010
89% complete
CT
Case
Bilateral macular calcification
Published
19 Dec 2010
68% complete
CT
Article
Dacryocystitis
Dacryocystitis is the inflammation of the nasolacrimal sac related to impairment in the lacrimal drainage system and superimposed infection.
Epidemiology
Dacryocystitis has a bimodal distribution: neonates due to congenital abnormalities and when acquired, usually affect individuals older tha...
Article
Fetal orbital masses
A fetal orbital mass is a rare occurrence but can arise from many patholologies
The list includes
Tumourous orbital masses
fetal retinoblastoma
fetal orbital teratoma
Non tumourous orbital masses
orbital encephalocoele 2
orbital heterotopic brain tissue 1
congenital cystic eyeball 4
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